pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / backwards / src / test / org / apache / lucene / search / TestConstantScoreQuery.java

diff --git a/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/search/TestConstantScoreQuery.java b/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/search/TestConstantScoreQuery.java
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+++ b/lucene-java-3.5.0/lucene/backwards/src/test/org/apache/lucene/search/TestConstantScoreQuery.java
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+package org.apache.lucene.search;
+
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import org.apache.lucene.document.Document;
+import org.apache.lucene.document.Field;
+import org.apache.lucene.index.IndexReader;
+import org.apache.lucene.index.RandomIndexWriter;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.store.Directory;
+import org.apache.lucene.util.LuceneTestCase;
+
+import java.io.IOException;
+
+/** This class only tests some basic functionality in CSQ, the main parts are mostly
+ * tested by MultiTermQuery tests, explanations seems to be tested in TestExplanations! */
+public class TestConstantScoreQuery extends LuceneTestCase {
+  
+  public void testCSQ() throws Exception {
+    final Query q1 = new ConstantScoreQuery(new TermQuery(new Term("a", "b")));
+    final Query q2 = new ConstantScoreQuery(new TermQuery(new Term("a", "c")));
+    final Query q3 = new ConstantScoreQuery(new TermRangeFilter("a", "b", "c", true, true));
+    QueryUtils.check(q1);
+    QueryUtils.check(q2);
+    QueryUtils.checkEqual(q1,q1);
+    QueryUtils.checkEqual(q2,q2);
+    QueryUtils.checkEqual(q3,q3);
+    QueryUtils.checkUnequal(q1,q2);
+    QueryUtils.checkUnequal(q2,q3);
+    QueryUtils.checkUnequal(q1,q3);
+    QueryUtils.checkUnequal(q1, new TermQuery(new Term("a", "b")));
+  }
+  
+  private void checkHits(Searcher searcher, Query q, final float expectedScore, final String scorerClassName, final String innerScorerClassName) throws IOException {
+    final int[] count = new int[1];
+    searcher.search(q, new Collector() {
+      private Scorer scorer;
+    
+      @Override
+      public void setScorer(Scorer scorer) {
+        this.scorer = scorer;
+        assertEquals("Scorer is implemented by wrong class", scorerClassName, scorer.getClass().getName());
+        if (innerScorerClassName != null && scorer instanceof ConstantScoreQuery.ConstantScorer) {
+          final ConstantScoreQuery.ConstantScorer innerScorer = (ConstantScoreQuery.ConstantScorer) scorer;
+          assertEquals("inner Scorer is implemented by wrong class", innerScorerClassName, innerScorer.docIdSetIterator.getClass().getName());
+        }
+      }
+      
+      @Override
+      public void collect(int doc) throws IOException {
+        assertEquals("Score differs from expected", expectedScore, this.scorer.score());
+        count[0]++;
+      }
+      
+      @Override
+      public void setNextReader(IndexReader reader, int docBase) {
+      }
+      
+      @Override
+      public boolean acceptsDocsOutOfOrder() {
+        return true;
+      }
+    });
+    assertEquals("invalid number of results", 1, count[0]);
+  }
+  
+  public void testWrapped2Times() throws Exception {
+    Directory directory = null;
+    IndexReader reader = null;
+    IndexSearcher searcher = null;
+    try {
+      directory = newDirectory();
+      RandomIndexWriter writer = new RandomIndexWriter (random, directory);
+
+      Document doc = new Document();
+      doc.add(newField("field", "term", Field.Store.NO, Field.Index.NOT_ANALYZED));
+      writer.addDocument(doc);
+
+      reader = writer.getReader();
+      writer.close();
+      searcher = newSearcher(reader);
+      
+      // set a similarity that does not normalize our boost away
+      searcher.setSimilarity(new DefaultSimilarity() {
+        @Override
+        public float queryNorm(float sumOfSquaredWeights) {
+          return 1.0f;
+        }
+      });
+      
+      final Query csq1 = new ConstantScoreQuery(new TermQuery(new Term ("field", "term")));
+      csq1.setBoost(2.0f);
+      final Query csq2 = new ConstantScoreQuery(csq1);
+      csq2.setBoost(5.0f);
+      
+      final BooleanQuery bq = new BooleanQuery();
+      bq.add(csq1, BooleanClause.Occur.SHOULD);
+      bq.add(csq2, BooleanClause.Occur.SHOULD);
+      
+      final Query csqbq = new ConstantScoreQuery(bq);
+      csqbq.setBoost(17.0f);
+      
+      checkHits(searcher, csq1, csq1.getBoost(), ConstantScoreQuery.ConstantScorer.class.getName(), null);
+      checkHits(searcher, csq2, csq2.getBoost(), ConstantScoreQuery.ConstantScorer.class.getName(), ConstantScoreQuery.ConstantScorer.class.getName());
+      
+      // for the combined BQ, the scorer should always be BooleanScorer's BucketScorer, because our scorer supports out-of order collection!
+      final String bucketScorerClass = BooleanScorer.class.getName() + "$BucketScorer";
+      checkHits(searcher, bq, csq1.getBoost() + csq2.getBoost(), bucketScorerClass, null);
+      checkHits(searcher, csqbq, csqbq.getBoost(), ConstantScoreQuery.ConstantScorer.class.getName(), bucketScorerClass);
+    } finally {
+      if (searcher != null) searcher.close();
+      if (reader != null) reader.close();
+      if (directory != null) directory.close();
+    }
+  }
+  
+}